#include<iostream>
#include<cmath>

struct polar
{
	double distance;
	double angle;
};
struct rect
{
	double x;
	double y;
};

polar rect_to_polar(rect xypos);
void show_polar(polar dapos);

int main()
{
	using namespace std;
	rect rplace;
	polar pplace;
	
	cout<<"Enter the x and y values: ";
	while(cin>>rplace.x>>rplace.y)
	{
		pplace=rect_to_polar(rplace);
		show_polar(pplace);
		cout<<"Next two numbers (q to quit): ";
		
	}
	cout<<"Done.\n";
	return 0;
}

polar rect_to_polar(rect xypos)
{
	using namespace std;
	polar answer;
	
	answer.distance=
		sqrt(xypos.x*xypos.x+xypos.y*xypos.y);
	answer.angle=atan2(xypos.y,xypos.x);
	return answer;
}

void show_polar(polar dapos)
{
	using namespace std;
	const double Rad_to_deg=57.29577951;
	
	cout<<"distance = "<<dapos.distance;
	cout<<",angle = "<<dapos.angle*Rad_to_deg;
	cout<<" degrees\n";
}
